MICHELIN LATITUDE TOUR HP 235/50R18 TIRES ON 2011 BUICK REGAL. TIRES REPLACED NOVEMBER 2014 AND WORE DOWN TO 4/32 TREAD ON DEC 19,2016. TIRE WAS RATED FOR 55,000 MILE WEAR. LACK OF TREAD CONTRIBUTED TO ACCIDENT ON THAT DATE. CAR WAS UNABLE TO STOP, SLIDING INTO THE CURB CAUSING $4200 IN DAMAGE EVEN THOUGH ACCIDENT WAS AT LOW SPEED. MICHELIN WILL NOT REPLACE TIRES. CAR CURRENTLY BEING REPAIRED. DAMAGE TO WHEELS, SUSPENSION, STEERING GEAR..